Sewer/drains on new property

Just receieved contracts today for the property i was delighted with. Noticed a blue shaded area in the plans for my garden and that of a number of others, but by far the minority of houses in the estate don't have the blue shading.

Anyway read the small print and the county council says it retains the right to work on the drains sewers in the garden while they're still 'live' Am disgusted. Estate agent never mentioned these sewers or drains and why they're in about 5 percent of the houses.
What do I do? anyone have similar experience? Literally sounds like co county is retaining right of access to my property whenever it likes. Am not comfortable with that .

Where i live, the drains run along houses, 2 at the back (7feet from house, 3feet deep for fouled and rain water) , and one at the front (rain water).
I think this is fairly standard as they need to collect the "water" from all houses.
Also some properties (incl mine) have a main drain (to circulate stuff form the collector drains mentionned above) running in the garden, but generally positionned closed to boundary (i.e. unlikely to be build on top as too close to boundary) rather then close to houses

The chance that council come and dig up your garden is the same as winning the euro million lottery!!

I would not be bothered with it.... unless, they run to close to your house and could prevent you from building an extension for instance without having these drains moved, at your own cost i guess.

Musn't have made it clear, sorry, these sewers / drains are not linked to my new house. Think they have something to do with neighbouring premises. Contract says they are due to be 'decommissioned' but not before i sign for house...
Obviously would understand if they were connected to house.

Sewers are an essential part of our civilisation, without them we would live with the plague, cholera, typhus etc.... So it is in our/your interest that the sewers are maintained. But you did well in investigating the matter, far too many would not even bother to look at the paper work, just buying after seeing the showhouse.
In the matter of preventing a public health hazard the authorities will always have the right and duty to enter anyones premise. I think what the drawings are saying is that any obstruction of access to the area is plainly forbidden, you would not be entitled to build a shed or a garage on the spot. Similar as you would not be allowed to build a structure around an ESB pole- even though that does happen here now and then.....

I was afraid someone would take it that I didn't know houses had to have sewers and drains. Of course that's a given ! Am talking about drains that are NOT linked to my property. Anyway will just ring council and auctioneer tomorrow for more info. thanks all

I think it's ridiculous that estate agents can sell a property and not advise of a way leave over the property for a third party. The purchaser should be made aware of this long before contract stage. I'm aware of someone who paid an extra €20k for a larger site and at contract stage was advised of a way leave for the council to services located in their large back garden! I wouldn't worry too much about it - at least it's the council and not one of your neighbours. If they do need to do work on the services/drains they will have to make good your garden again - so don't worry.